/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.iotdb.cli;

import org.apache.thrift.annotation.Nullable;

import java.io.*;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;

public abstract class AbstractScript {

    protected void testOutput(ProcessBuilder builder, @Nullable String[] output, int statusCode)
            throws IOException {
        builder.redirectErrorStream(true);
        Process p = builder.start();
        BufferedReader r = new BufferedReader(new InputStreamReader(p.getInputStream()));
        String line;
        List<String> outputList = new ArrayList<>();
        while (true) {
            line = r.readLine();
            if (line == null) {
                break;
            } else {
                outputList.add(line);
            }
        }
        r.close();
        p.destroy();

        System.out.println("Process output:");
        for (String s : outputList) {
            System.out.println(s);
        }

        if (output != null) {
            for (int i = 0; i < output.length; i++) {
                assertEquals(output[output.length - 1 - i], outputList.get(outputList.size() - 1 - i));
            }
        }
        while (p.isAlive()) {
            try {
                Thread.sleep(100);
            } catch (InterruptedException e) {
                e.printStackTrace();
                fail();
            }
        }
        assertEquals(statusCode, p.exitValue());
    }

    protected String getCliPath() {
        // This is usually always set by the JVM

        File userDir = new File(System.getProperty("user.dir"));
        if (!userDir.exists()) {
            throw new RuntimeException("user.dir " + userDir.getAbsolutePath() + " doesn't exist.");
        }
        File target = new File(userDir, "target/maven-archiver/pom.properties");
        Properties properties = new Properties();
        try {
            properties.load(new FileReader(target));
        } catch (IOException e) {
            return "target/iotdb-cli-";
        }
        return new File(
                userDir,
                String.format(
                        "target/%s-%s",
                        properties.getProperty("artifactId"), properties.getProperty("version")))
                .getAbsolutePath();
    }

    protected abstract void testOnWindows() throws IOException;

    protected abstract void testOnUnix() throws IOException;
}
